Feedburner Not counting email subscriptions?

I was checking my stats today and I noticed something strange, my feedburner subscriptions took a huge drop! How huge was the drop? Let this picture tell you more about it.

I quickly looked at the subscriber stats and noticed that the pie chart doesn’t count anymore the email subscriptions. I have not heard of any recent news about this move so I’m not sure what exactly happened. Perhaps it’s just a bug just like the times when the feed subscribers would count zero (0)?

Since it has only been one day from the drop, I would think that this is just a bug or feedburner is not counting email subscriptions anymore? What about your feedburner stats? Is it just me? or it happened to everybody?

Update: I guess it was just a one day thing as stats went back to normal today.

in other words, Feedburner failed to send the copy of your feed to your email subscribers. Maybe all your email subscribers are using Yahoo Mail. Once Yahoo Mail is not accessible, your email subscribers will be mark 0 to0